Heat-conserver



J. M. muasum. HEAT CONSERVER. APPLICATION FILED DEC. 3, 19H;

Patented Feb. 1, 1921.

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OF CHICAGO, ILLINOIS.

HEAT-CONSERVER.

Application filed December 3, 1917.

To all to item it may concern y le lrnown that I, JHHIAH M. Tnnnsnnmi, a citizen of the United States, residing at Chicago, in the county oi. Cool; and State 0t lllinois, have invented certain new and useful Improvements in lIeat-Conservers, ct which the following is a specification.

The invention has for an object to eflect improvements in devices used for conserving heat beneath receptacles over gas burners and the like, and aims particularly to simpliiy the manufacture and increase the efliciency ot those devices in the form of rings adapted to be used. upon stoves around the burner. It is an aim to present a device. to receive the receptacle directly thereon by which the opening through the ring at the upper sideis closed by the receptacle, and whereby the ring will conserve an ocus upon the bottom or the receptacle, the heat passing upwardly from the burner. A further aim of the invention is to produce a device which is adapted for use with large and small receptacles without necessity for adjustment, and which will be efficient with both large and small receptacles.

Additional objects, advantages and tea-- tures of invention may appear in the device, from the construction arrangement and combination of parts described hereinafter and shown in the drawings, wherein,

Figure 1 is a bottom view of the device constructed in accordance with my invention,

Fig. 2 is a cross section thereof,

There is illustrated a heat conserver for gas stoves formed of sheet metal, and comprising a cylindrical wall portion 10, having a lower edge portion. turned inward to ex-. tend horizontally, forming a base flange 14;, extending inwardly from the wall a distance of: approximately one-eighth of an inch, as formed in practice. In practice number twentyseven gage galvanized sheet iron has been used :tor the formation of the wall and flange 141.

A top flange 16 is provided, of irustoconical form, providing a central opening l7 considerably smaller than the diameter of the space within the wall 10. In practice, the wall 10 is made of a diameter of six inches, while the flange 16 is formed to extend inwardly from the wall one inch, thus making an opening in the neighborhood of four inches in diameter through the top of the device. The flange 16 1s provided with Specification of Lettcrs Patent.

lPatented Feb. 1., 1921..

SerialNo. 205,174. i

a series of: circumterentially spaced tongues 21. cut and pressed from the body of the flange 16, being taken from material extending transversely otthe flange from closely adyacent the outer edge to apoint closely adjacent the inner edgenot the flange, and being left attached at their outer ends. These tongues are utilized to hold in place a strip of asbestos 22, having a width corresponding to the height of the wall 10 between the flanges let. and 16, between which it is adjusted. lying close against. the inner .face of the wall 10, while the tongues 21 are lying in a plane with the body of the flange 16, and after proper adjustment oi the asbestos, the tongues 21 are bent downwardly against the inner surface ofthe asbestos 22, holding it outwardly against the wall 10, so that it will be properly supported by the flange 14. In this way the necessity is obviated for extending the lower edge of the wall 10 so as to engage the inner side of the asbestos strip, and the formation ot the support for the asbestos at the lower edge is greatly simplified. By my construction, I am able to form the tongues 21 of a length sufficient to hold the lower part ot the asbestos securely in position to rest upon the flange 14, at the same time that the upper edge portions are held. adjacent: the

bases of the tongues 21.

In order that when. a large receptacle is disposed upon the device the flange portion will. not ward heat away from the outer bottom portion of the receptacle, the device is so formed that the heat may act upon the receptacle over the flange. This may be ac complished in one or more ways, one method consisting in forming the flange 16 in the shape of the frustrum of an inverted cone, so that its inner edge portions will extend downwardly away from the bottom of a large receptacle set thereon, leaving a space over the flange for access oi" heat to the bottom 01'' the receptacle thereover. When a small receptacle is disposed upon. the flange 16 as formed in this manner, it will be readily understood that the receptacle will be efficiently supported at its extreme edge portions where it rests uponthe flange 16, while the inner portion of the flange will extend under the receptacle and slightly downward therefrom, permitting heat to circulate under the receptacle all the way to the point of contact with the flange 16, while the escape of heat outwardly of the receptacle is the lower portion of the fl prevented by ange 16.

of gases tending to accumulate within the eVice when thereover, in use, thereby preventing the retention of consumed gases from the flame for an unduly long period.

at is claimed: A heat conserver scribed comprising a cylindrical wall JOSIAH hf. TRUESDELL. Witnesses J OHN R. HAsK, MARTIN BURCH. 

